Acorn SW-MW15CG250 Metal to Wood Screw 9x1.5in 250ct

Product Description

The ACORN SW-MW15CG250 is a self-piercing, sealing tapping screw designed for roofing and siding applications where metal meets wood substrate. Manufactured from heat-treated C1022 steel with case hardening, each screw features a 1/4-inch across-flat high-hat hex washer head with an assembled EPDM (Ethylene Propylene Diene Monomer) washer that conforms to the surface for a durable, weatherproof seal. The twin-lead Type 17 point combined with hi-lo threads reduces drive time and increases pull-out resistance. A dacro base coating rated to 1,000 hours of salt spray testing is topped with a charcoal gray powder coat. Sold in a 250-count pack. Installed by roofing and siding contractors in light commercial and residential construction.

These screws are suited for attaching metal panels, flashing, and cladding to wood framing or sheathing. The self-piercing point eliminates the need for a pilot hole in most applications, speeding up installation on metal roofing and wall panel systems. The EPDM washer provides a compressible seal at the fastener head, reducing the risk of water infiltration at each penetration point. The charcoal gray powder coat is applied over the dacro base coating to blend with similarly colored metal roofing and siding panels.

Key Features

• Self-piercing Type 17 point eliminates pilot hole requirement in most applications
• Heat-treated C1022 steel with case hardening for durability under load
• 1/4-inch across-flat high-hat hex washer head with assembled EPDM sealing washer
• Hi-lo threads provide faster drive time and greater pull-out resistance
• Dacro coating rated to 1,000 hours of salt spray testing for corrosion resistance
• Charcoal gray powder coat over dacro base for color-matched panel installation
• Pack of 250 screws per unit

Compatibility

Designed for metal-to-wood fastening in residential and light commercial roofing and siding applications where a self-sealing hex washer head screw is required.

Installation Notes

Installed by roofing and siding contractors using a hex-head driver bit matched to the 1/4-inch across-flat head. Confirm panel and substrate material compatibility before specifying fastener length. Follow applicable building codes and panel manufacturer guidelines for fastener spacing and edge distance. Do not overdrive — compressing the EPDM washer beyond the seating point can compromise the seal.

Technical Specifications

• Screw Size: 9 x 1-1/2 inches
• Head Type: High-hat hex washer head with EPDM washer
• Drive Size: 1/4 inch across flat
• Point Type: Twin-lead Type 17
• Thread Type: Hi-lo
• Material: Heat-treated C1022 steel, case hardened
• Coating: Dacro base coat with charcoal gray powder coat topcoat
• Corrosion Rating: 1,000-hour salt spray test
• Color: Charcoal Gray
• Pack Quantity: 250 pieces
• Package Weight: 2.691 pounds
• UPC: 00810468002573

Standard Information

• Brand: ACORN
• Manufacturer Part Number: SW-MW15CG250